1. Northern.

2. The north or northern regions.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• aeptentrion,
• zeptentrion,
• xeptentrion,
• deptentrion,
• eeptentrion,
• weptentrion,
• swptentrion,
• ssptentrion,
• sdptentrion,
• srptentrion,
• s4ptentrion,
• s3ptentrion,
• septrentrion,
• septerntrion,
• Septentrian,
• septentrional,
• Septentrionly,
• Septentryion,
• Septretrion,
• Septontrion

• september.

The adjective form of the word "septentrion" is "septentrional".

The plural form of "septentrion" is "septentrions".

The singular form of the word "septentrion" is "septentrion". This word is typically used in its plural form and refers to the northern regions or the northern parts of a country or territory.